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    Subject[PATCH 3.11 83/94] drm/radeon/atom: workaround vbios bug in transmitter table on rs780
    Date
    3.11-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Alex Deucher <alexander.deucher@amd.com>

    commit c23632d4e57c0dd20bf50eca08fa0eb8ad3ff680 upstream.

    Some rs780 asics seem to be affected as well.

    See:
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=91f3a6aaf280294b07c05dfe606e6c27b7ba3c72

    Fixes:
    https://bugzilla.kernel.org/show_bug.cgi?id=60791

    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/gpu/drm/radeon/atombios_encoders.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/gpu/drm/radeon/atombios_encoders.c
    +++ b/drivers/gpu/drm/radeon/atombios_encoders.c
    @@ -1657,7 +1657,7 @@ radeon_atom_encoder_dpms_dig(struct drm_
    * does the same thing and more.
    */
    if ((rdev->family != CHIP_RV710) && (rdev->family != CHIP_RV730) &&
    - (rdev->family != CHIP_RS880))
    + (rdev->family != CHIP_RS780) && (rdev->family != CHIP_RS880))
    atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_ENABLE_OUTPUT, 0, 0);
    }
    if (ENCODER_MODE_IS_DP(atombios_get_encoder_mode(encoder)) && connector) {



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